In my opinion x512 ground textures are sharp and clear. they look fine and are the perfect size. not too big or too small. You only notice blurry bits or pixels if you zoom in to it.

I don't see the need for x1024 grounds. If they implement that people will want x1024 joints and body textures which would be pointless too

I think a decently made good quality image on a x512 ground looks sharp.

If all you have to go by is "if you zoom in to it" than that is not a very good argument. the ground textures look totally fine while playing toribash

512x grounds are disgusting and it doesn't show the image's full potential.

I personally think that 1024x body textures are useless because of how the size of the image is in-game. You see 512x body textures well because it's small in-game and you see it on the tori unlike the ground. The ground texture takes the middle part of the dojo which is quite large. (512x works but 1024x is a drastic improvement).